6642396 has 18 divisors (see below), whose sum is σ = 16790592. Its totient is φ = 2214120.

The previous prime is 6642379. The next prime is 6642403. The reversal of 6642396 is 6932466.

6642396 is a `hidden beast` number, since 6 + 642 + 3 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 184511 = 6642396 / (6 + 6 + 4 + 2 + 3 + 9 + 6).

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 6⁸ + 6⁸ + 4⁵ + 2¹³ + 3¹³ + 9 + 6⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 6642396.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92220 + ... + 92291.

Almost surely, 2^6642396 is an apocalyptic number.

It is an amenable number.

6642396 is an abundant number, since it is smaller than the sum of its proper divisors (10148196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6642396 is a wasteful number, since it uses less digits than its factorization.

6642396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184521 (or 184516 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 6642396 is about 2577.2846175772. The cubic root of 6642396 is about 187.9785323307.

The spelling of 6642396 in words is "six million, six hundred forty-two thousand, three hundred ninety-six".